Pharmaceutical manufacturing operates under some of the strictest quality and safety requirements of any industry. Even trace levels of impurities can impact drug efficacy, stability, or patient safety, and regulators around the world demand rigorous control and documentation.
Certified Reference Materials (CRMs) are the gold standard for verifying impurity levels and ensuring analytical data is both accurate and defensible. This guide covers everything you need to know about selecting, validating, and using CRMs for pharmaceutical impurity testing, from meeting ICH/USP guidelines to avoiding compliance pitfalls.
Why Pharmaceutical Impurity CRMs Are Essential
Tightening Regulatory Limits
The International Council for Harmonisation (ICH) Q3A–Q3D guidelines and USP <1086> set strict thresholds for residual solvents, elemental impurities, and degradation products. For example, ICH Q3D and USP <232>/<233> specifies daily permissible e